Water-heater.



W. L. BLACKWELL & E. J. DE VILLE.

WATER HEATER.

APPLIOATION FILED Amma, 1910.

Patented Allg. 13, 1912.

3 SHBBTS-SHBET 1.

W. L. BLACKWELL & E. J. DE VILLE. WATER HEATER.

APPLIUATION FILED APR.13,1910.

1,035,679. Patented Aug. 13,1912.

3 SHEETS-SHEET 2.

nl In W. L. BLACKWELL & E. J. DE VILLE. WATER HEATER.

UNITED sTATEs PATENT OFFICE.

i WILLIAM BLACKWELL AND EDWARD J. DE VILLE, OF DAYTON, OHIO, ASSIGNORS T0 kTHE COOPER HEATER COMPANY, OF DAYTON,

OHIO, A CORIORATION OF OHIO.

WATER-HEATER.

Specication of Letters Patent. l Patented Aug. 13,1912.

Application filed April 13, 1910. Serial No. 555,235.

To all whom it may concern 'Be it known that we, WILLIAM L. BLACKvh WELL and EDWARD J. DE VILLE, citizens of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Water-Heaters, of which the following is a specification.

This improvement relates to a water heater and more particularly a water heater for places requiring a compact device such as in street cars and analogous uses and the general object iirthe arrangement of parts is to make the heater such that the parts can he stamped or pressed out of some desii-able material such as steel thereby avoiding as much possible cast metal and at the same time simplifying and strengthening the construction in an im roved manner.

Referring to the drawings: Figure 1 is a front sectional View on the line of Fig. 2. Fig. 2 is a transverse sectional view on the line y-'y of Fig. 1. Fig. 3 is a per speetive view of the Water back and outer circulating tubes. Fig. 4 is a detail view of one of the circulating pipes.

Like lettersof reference indicate similar parts'throughout the ditl'erent views.

In a general way the circulation of water is similar to that shown and described in the Letters-Patent 945,214, issued January 4th, 1910, to W'. L. Blackwell, there heilig a series of outer circulating tubes and inner telescoping tubes that are so arranged as to cause the wat-er to circulate from the outer vertical water leg; thence into the inner series of tubes and from thence to the outer series of tubes; thence to the inner water leg and thence to the outlet, but in the construction shown and described herein the parts are so formed that they may be pressed or stamped out of suitable material thereby dispensing with cast material, and the arrangement is such as to simplify the construction.

Referring to Fig.

1, we preferably employ an outer wall'or casing,

marked a, forming with the inner an outer tube sheets a1 and a?, an outer water leg a3 and an inner water leg a, theinlet a5 rom the source of supply comprising a passage passing through the outside casing a of the heater and also through the outer wall a, discharging into the chamber This chamber has a curved partition b which `entering through the inlet ing tubes c extends from the base of the tire box to the top thereof and the lower series of circulating pipes b2 (see Fig. 2) extend vfrom said chamber b around the circumference of the fire box and discharge into the chamber a3 (see Fig. 1). The object of this partition b1 being to force the water a.xs to circulate through chamber b, thence through said Lower series of circulating pipes ZF to said halnher a being the lower part of said outer water leg. The construction preferably shown and described of, the series ot upper tubes is one where the outer circulatare closed at their front or free ends, projecting from ythe inner tube Asheet a2 which is of pressed material, being preferably one continuous inclosing wall extending from the ash pit to the top of the heater. The inner circulating tubes c1 project from the outer tube sheet al having their outer cr free ends open and tclescoping within the outer circulating tubes c and this outer tube sheet is pressed out with flanges forming walls for water legs. It is apparent that the outer wall, a, may be welded to the inner tube sheet a? and in Fig. 1 this inner tube sheet is shown extending downwardly and supported by the base of the heater. There is preferably shown an outside casing for -the stove comprising the rear'outside casing o and the corresponding front having a tire door therein and it is a parent that the tire grate may be supportedpm any usual way at the base of the stove as indicated in Fig. 1 and the fuel may be supplied through said door, (l, (Fig. 2).

Following, now, the circulation of water, the common inlet a5 supplies water to the chamber b, and same circulates, as heretofore explained, through the curved lower series of circulating pipes b2 to the outer water leg a3 and the water rises in said outer water leg, it being apparent that the arrangement of the circulating pipes and the partition or guiding wall b1 will improve the circulation of the water by reason of increasing the amount of heat to which the water will be subjected while passing around the tire box and as a result the water entering the water leg a will be expanded so that when it fills said outer water leg as the top wall will coperate therewith to force the water through the pipes c1. To this end the pipes b2 are tapered at their ends and casing wedged into the outer tube sheets a2 so that the circulating pipes b2 are nested together very closely, insuring a number of circulating pipes `Within a limited space. The

Water passes into the inner circulating pipes c1, thence through the closed outer circulating pipes c, by reason of the space 02, 2) formed between the inner and outer c1rculating pipes to the inner water leg a4,

thence upwardly until Iwater is discharged out of the out-let (Z1. The circulation in this arrangement is substantially as shown and disclosed in the above mentioned Patent 945,214, in that the water passes from the outer water leg through a series of inner circulating pipes open at their front end and thereby discharge into the outer circu-l lating pipes closed at their front ends and from thence to the inner water leg and from thence through the discharge.

Having thus described our invention, We claim:

1. In a'heater of the character described, the combination of a fire boX, two verticallyarranged water legs, a partition in the lower end of one of said legs to form a chamber ,2. In a heater of the character described, a re box, two vertically-arranged water legs, ya diagonally-arranged partition located in the lower end of one of said legs to form a chamber on one side thereof, a

seriesV of circulating pipes located in saidr fire box communicating with said chamber and with one of said water legs, a series of circulating pipes located above said iii-e box having a communication with both of said water legs, and an outlet from one of said water legs. l i

3. In a heater of the character described, the combination of a fire box, a casing having a vertically-arranged partition to form outer and inner water legs, a partition in theY lower part of said casing to 'form a lower chamber, an inlet communicating with said chamber, lcirculating pipes in said fire box forming a communication between said chamber and said outer water leg, a set of circulating pipes around the upper part ofsaid heater communicating with said inner water leg, a series of' pipes formingv communications between said outer water legI and said upper set of waterpipes, and an outlet connected with said inner water leg.

In testimony whereof, we have hereunto setour hands this 30th day of -March 1910.

f WILLIAM L. BLACKWELL.

EDWARD J. DE VILLE.

Witnesses:

SADIE H. MERETZ, FRANCIS GoULD. 

